Where did our notion of a 'scholar' come from?

I wonder where the notion of 'scholarship', and the 'scholar' come from. 10,000 years ago, everyone on the planet were hunters, and gathers. People at that time forage for food. Once in a while, you see an enemy group competing with your group for natural resources, so it makes sense to have a warrior classes hanging around. With the emergence of farming, it makes sense to have people defending your land, so soldiers were nice to have around. The notion of a 'scholar' is completely different. Scholars are suppose to be people that get pay to think, and write books, and articles. You don ` t need a scholar to run the government, fight enemy, or farming the land. Scholars can ` t paint, draw, make stuff, or fix stuff. So, where did the notion of 'scholarship' come from? Why is there a class of people that sits around all day, thinking, writing, and doing math( if they are mathematicians). My guess is that our notion of a 'scholar' comes from the church, and the function of 'priest'. In Jewish religion, there is a demand for scholars. The notion of a rabbi is in fact a telmudic scholar. The spread of Christianity demands the use of priest, and the need for people to learn to write and read stuff. This is in fact the case if you look at the original of the oldest universities we have in Europe. They all started up in popping priest out of these institution. This explain why literacy develop, but why is there people 'studying' for a living? I think it has to be Judaism! The whole notion of a class of people just studying comes from the Jews. It is part of Jewish law to study. Later, Christians developed a need to interpret the bible, so, they also need people to do this job.